Hi Vit!
You are safe with 10-16V, and if you ar using polarized caps, plus goes to the drains.
At 19V rails you should have around 5.5V DC at the drains, and 0V DC at the inputs. So in theory you will have 5.5V DC across the caps which is their min voltage range.
I have some Blackgate type N at 6.3V I tend to use, but at frequencies below 1 Hz, the voltageswing around the caps are 8V. I dont expect that low signals comming, but just in case I will experiment with some 6.2V zener across the BGN´s for protection, this will also suppres those low freq signals. But one has to be carefull not to get DC at the inputs. How this will affect the sound, I don´t kow I still have to try.
You are safe with 10-16V, and if you ar using polarized caps, plus goes to the drains.
At 19V rails you should have around 5.5V DC at the drains, and 0V DC at the inputs. So in theory you will have 5.5V DC across the caps which is their min voltage range.
I have some Blackgate type N at 6.3V I tend to use, but at frequencies below 1 Hz, the voltageswing around the caps are 8V. I dont expect that low signals comming, but just in case I will experiment with some 6.2V zener across the BGN´s for protection, this will also suppres those low freq signals. But one has to be carefull not to get DC at the inputs. How this will affect the sound, I don´t kow I still have to try.
hi henrik,
is the xsoz&xbosoz really x:ed? some guys here in sweden says it's not.
i'm building it anyway 😉
is the xsoz&xbosoz really x:ed? some guys here in sweden says it's not.
i'm building it anyway 😉
Hi Vit and Broccolo!
They are as X´d as possible, and in the most simple way possible.
Take a look at my description http://www.diyaudio.com/forums/showthread.php?threadid=3949&perpage=15&pagenumber=46, read the patent and also read around page 17 in this x soz thread.
Because you don´t se X, as a graphic sign in the scematic, it does not mean it isn´t X´ed.
X or supersymmety is hard to grasp, but try again.
They are as X´d as possible, and in the most simple way possible.
Take a look at my description http://www.diyaudio.com/forums/showthread.php?threadid=3949&perpage=15&pagenumber=46, read the patent and also read around page 17 in this x soz thread.
Because you don´t se X, as a graphic sign in the scematic, it does not mean it isn´t X´ed.
X or supersymmety is hard to grasp, but try again.
Henrik said:Hi Vit and Broccolo!
They are as X´d as possible, and in the most simple way possible.
Take a look at my description http://www.diyaudio.com/forums/showthread.php?threadid=3949&perpage=15&pagenumber=46, read the patent and also read around page 17 in this x soz thread.
Because you don´t se X, as a graphic sign in the scematic, it does not mean it isn´t X´ed.
X or supersymmety is hard to grasp, but try again.
the problem is that I don't see X like on the aleph x, in pther words: feedback from one side to the other
but mr pass's patent don't either
there are different forms of X
The feed back from one side leaves the source as a sourcefollower and appears at the other source seen as coupled in common gate and thereby appears noninverted at the drain of the other mosfet. There isn´t differet forms of X, it´s all about the same.
In the X feed back loop for XSOZ. Does it matter if R212 1K and C201 220uF are reversed. Or must R212 be soldered to the input and C201 soldered to the output.
Thanks.
Thanks.
alephx vs. Xsoz
Hi,
it seems that xsoz thread is a bit death, last time...
i wonder why no one of the thousands of diy guys here didnot build a xsoz and a alephx to compare.
i just bought two alephx pcb`s of carpenter (hope the arrive me, soon)
i hope i get them working, then i will tell you about my expieriences.
I have one big question to you, all:
as you know i use henriks Xsoz and Xbsoz with speakers at about 90 db efficiency.
but the power doesnt be sufficient, even if i turn the voltage of the xsoz to +-35 volts, that should be about 18 watts.
when i connect my Hiraga le monstre (not balanced) to the XbSoz, the power is more than twice. i can turn the volume knob half-back. And the monster has only 8 watts.
can someone explain me that??
greets to henrik and jh (and all the others)
Hi,
it seems that xsoz thread is a bit death, last time...
i wonder why no one of the thousands of diy guys here didnot build a xsoz and a alephx to compare.
i just bought two alephx pcb`s of carpenter (hope the arrive me, soon)
i hope i get them working, then i will tell you about my expieriences.
I have one big question to you, all:
as you know i use henriks Xsoz and Xbsoz with speakers at about 90 db efficiency.
but the power doesnt be sufficient, even if i turn the voltage of the xsoz to +-35 volts, that should be about 18 watts.
when i connect my Hiraga le monstre (not balanced) to the XbSoz, the power is more than twice. i can turn the volume knob half-back. And the monster has only 8 watts.
can someone explain me that??
greets to henrik and jh (and all the others)
For me the reason is easy to see: big heatsinks are very expensive!
I have the alephx PCB, but for this reason i did not start building until now.
what did you not build
...because of the big amounts of heatsinks?
the alephx or the xSoz?
wo hast Du die alephx pcb`s her?
from where are your alpeph x boards?
from chad?
greets, Ralf
...because of the big amounts of heatsinks?
the alephx or the xSoz?
wo hast Du die alephx pcb`s her?
from where are your alpeph x boards?
from chad?
greets, Ralf
ralf, in case i find a good and cheap source for affordable and really big heatsinks i would build alepx and SoZ or xSoZ. In my experience with different Zens, heatsinks was the most expensive part for building an amp.
I ordered them from Fischer.
Ich hatte die Platinen bei der großen alephx PCB Bestellung von Chad geordert.
At the moment i can´t go on building expensive stuff because i put so much into my speaker project....
I ordered them from Fischer.
Ich hatte die Platinen bei der großen alephx PCB Bestellung von Chad geordert.
At the moment i can´t go on building expensive stuff because i put so much into my speaker project....
....
...i know.
i hope my wife will not shoot me for the money i waste.
Since i only trust my ears i am building diffrent amplifier designs - not only the ones from pass-forum (excuse me).
and as told, the hiraga monster is very, very very good. (and very very cheap to build.
if battery psu and high grade parts will enhance the sound as i hope it will outperform the XSoz...
i am bulding a JLH design , too.
when i have checked out all of them i make my decision and build the end version of "My amp"
greets,
ralf
till said:
...i know.
i hope my wife will not shoot me for the money i waste.
Since i only trust my ears i am building diffrent amplifier designs - not only the ones from pass-forum (excuse me).
and as told, the hiraga monster is very, very very good. (and very very cheap to build.
if battery psu and high grade parts will enhance the sound as i hope it will outperform the XSoz...
i am bulding a JLH design , too.
when i have checked out all of them i make my decision and build the end version of "My amp"
greets,
ralf
Re: alephx vs. Xsoz
Is it a matter of gain with the XSOZ and XBSOZ ?
Isn't the Hiraga a push pull design or I'm wrong ...?
Anyway with the B&W 90db/1w/1meter 2 way system I obtain the best results with biamplification ,when talking of low efficiency
designs like son of zen, in particular IMHO the mid/high freq are usually (even if perfectly sweet and detailed) penalized by the passive crossover that acts strongly around the drains of the diff-pair(SOZ) .
Never had problems with volume, by the way , remember that your X version only controls the gain and do not reduce distorsion.
Try build a folded cascode version and let me know......
Billiani / Had enough of push-pull
ralf said:
Is it a matter of gain with the XSOZ and XBSOZ ?
Isn't the Hiraga a push pull design or I'm wrong ...?
Anyway with the B&W 90db/1w/1meter 2 way system I obtain the best results with biamplification ,when talking of low efficiency
designs like son of zen, in particular IMHO the mid/high freq are usually (even if perfectly sweet and detailed) penalized by the passive crossover that acts strongly around the drains of the diff-pair(SOZ) .
Never had problems with volume, by the way , remember that your X version only controls the gain and do not reduce distorsion.
Try build a folded cascode version and let me know......
Billiani / Had enough of push-pull
Magic, i thought this thread was dead long time ago!
Gnomus:
You can reverse R212 1K and C201 220uF, no problem.
Ralf:
I remember you had this problem
Hi stefano!
At the moment I am building an X analogtstage in my CD, but unfortunately I don´t have so much spare time for the time beeing.
Greets to all - Henrik.
Gnomus:
You can reverse R212 1K and C201 220uF, no problem.
Ralf:
I remember you had this problem
The gain in my setup is perfect for a 8 watt XSOZ, but you probably need to increese the gain in order to exploit the extra voltage swing your PSU at 35V can give you. I am using a PSU at 19 V wich is more than sufficient to drive my around 90db speakers.
Hi stefano!
At the moment I am building an X analogtstage in my CD, but unfortunately I don´t have so much spare time for the time beeing.
Greets to all - Henrik.
Re: alephx vs. Xsoz
Hi Ralf
As you know very well, the power is "the rate" at which the work is done, or at which the energy is transferred. In my opinion, how fast the amp reaches its output power is another matter and it is up to the gain value. If there are two amps having the same maximum output power of 20W, but different gain values e.g. 4 (12dB) and 8 (18dB), then the 12 dB amp would reach its power at lower speed than the 18dB amp. In consideration of this, I sometimes need to adjust the step values of the volume attenuator of my pre amp.
JH
PS. I do less care of the output power, the gain and the position of the volume as long as they work the music to melt into my heart.
ralf said:
Hi Ralf
As you know very well, the power is "the rate" at which the work is done, or at which the energy is transferred. In my opinion, how fast the amp reaches its output power is another matter and it is up to the gain value. If there are two amps having the same maximum output power of 20W, but different gain values e.g. 4 (12dB) and 8 (18dB), then the 12 dB amp would reach its power at lower speed than the 18dB amp. In consideration of this, I sometimes need to adjust the step values of the volume attenuator of my pre amp.
JH
PS. I do less care of the output power, the gain and the position of the volume as long as they work the music to melt into my heart.
Re: Re: alephx vs. Xsoz
...you`re right, but when i must turn my volume knob to full output and the musik doesn`play loud enough (i dont hear very loud musik), the its too less.
But i didn`try to increase the gain of my xbosoz because i`m afraid the superbe soundquality will get down.
Henrik, how moch, di you think i can increase the 39k resistor, without loosing quality?
greets,
Ralf
jh6you said:
...you`re right, but when i must turn my volume knob to full output and the musik doesn`play loud enough (i dont hear very loud musik), the its too less.
But i didn`try to increase the gain of my xbosoz because i`m afraid the superbe soundquality will get down.
Henrik, how moch, di you think i can increase the 39k resistor, without loosing quality?
greets,
Ralf